It is not only the economic gap between “North” and “South” which has dramatically widened: the same is true of the ecological gap. However, because the Earth is one ecological unit, the progressively worsening environmental crisis in the developing countries is of significance for the...

This paper addresses the timing and interdependence between innovation and environmental policy in a model of research and development (Ramp;D). On a first-best path the environmental tax is set at the Pigouvian level, independent of innovation policy. With infinite patent lifetime, the Ramp;D...